diff --git a/lib/ace/RenderLoop.js b/lib/ace/RenderLoop.js
index 9281bb00..c7b8f012 100644
--- a/lib/ace/RenderLoop.js
+++ b/lib/ace/RenderLoop.js
@@ -39,7 +39,7 @@ var RenderLoop = function(onRender) {
                 var _self = this;
                 event.addListener(window, "message", function(e) {
                     if (e.source == window && _self.callback && e.data == _self.messageName) {
-                        e.stopPropagation();
+                        event.stopPropagation(e);
                         _self.callback();
                     }
                 });